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239 Cards in this Set

An invisible line that connects the topes of the iliac crests. It crosses the L4-L5 junction.

What vertebrae does the spinal cord end at?

L1 or L2

What causes scoliosis?

Being born with an extra part of a vertebrae

What is exaggeration of the lumbar curvature called?

Lordosis

What is exaggeration of the thoracic curvature called?

Kyphosis

What is spina bifida?

A neural tube defect marked by congenital cleft of the spinal column usually with hernial protrusion of the meninges and sometimes the spinal cord

What is the name of the joint between an upper and lower articulating vertebrae?

Zygapophysial joint

What is the name of the lip of the lateral body of a cervical vertebrae that forms a lateral joint?

Uncinate process

What artery is the first branch of the subclavian artery?

Vertebral

How much of the brain's blood supply do the right and left vertebral arteries supply?

About a third

What is between the superior articular and inferior articular process?

The pars interarticularis

What is spondyloisthesis?

The forward displacement of a lumbar vertebra on the one below it and especially of the 5th lumbar vertabra on the sacrum, producing pain by compression of nerve roots

What is the name of the canal that is created by S4 and S5 not fusing in the midline?

Sacral hiatus

Why is the intervertebral foramen an artificial foramen?

Because a true foramen is a hole through one bone, while the intervertebral hole is formed by 2 vertebra

What is ALL and where is it located?

Anterior longitudinal ligament; runs from the sacrum to the base of the skull. It prevents hyperextension of the vertebral column

What is PLL and where is it located?

Posterior longitudinal ligament; runs within the vertebral canal along the posterior aspect of the vertebral bodies, attaches to the base of the skull (this articulation is known as the tectorial membrane)

What does the PLL do?

Inhibits hyperflexion of the spine and disc herniation

What ligament is located on the underside of the lamina?

Ligamentum flavum

What does the ligamentum flavum do and become?

It helps restore hyperextended and hyperflexed spinal columns to the neutral position. It becomes the posterior atlanta-occipital membrane

What membrane does the vertebral artery pass through?

The posterior atlanto-occipital membrane

What is the name of the synovial, plane joints that occur between the superior and inferior articular processes of the vertebrae?

Zygapophysial joints

What innervates the zygapopphysial joints?

Articular branches that arise from the medial branches of the posterior rami of spinal nerves

Where does the nuchal ligament attach?

The external occipital protuberance and posterior border of the foramen magnum to the spinous processes of the cervical vertebrae

How much of our height do the intervertebral discs account for?

one fourth

what are the 2 portions of the intervertebral discs?

the outer annulus fibrosis (cartilaginous) and the nucleus pulposus

what is the name of the elaborate venous system that drains the spinal cord? what's special about it?

Batson's plexus, it's valve-less

what's the arterial blood supply to the posterior vertebral column?

aorta and vertebral artery

what muscle is known as the swimmer's muscle and what are it's functins?